Pump-cylinder protector



March is, 1924. f 1,487,061

- L. M. HEFLIN v PUMP CYLINDER PROTECTOR Filed Feb. 17. 1923Zza/zMlkfZz/g Patented Mar. 18, 1924,

LUM M. HEFLIN, OF SONO'RA,- T EXAS.-

PUMP-CYLINDER PROTECTOR.

Application filed February 17, 1923. Serial No. 619,611.

T 0 all whom it may concern;

Be it known that I, LUM M. HEFLIN, a citizen of the United States,residing at Sonora, in the county of Sutton and State of Texas, haveinvented certain new and useful Improvements in Pump-CylinderProtectors, of which the following is a specification.

The present invention relates to pump cylinder protectors which preventthe gravitation of extraneous materials or objects into the cylinder.

It is well known in the art to provide various types of cylinderprotectors which function in a manner similar to the device of thepresent invention. However, it is an object of this invention to providea protector for the cylinder which is retained beyond the confines ofthe latter to eliminate possibility of the protector interfering with Ithe normal use of the pump and furthermore to prevent the protector fromcontacting with the cylinder walls and from scoring 0 otherwisemutilating the latter.

Another object of the invention is to provide a protector of this typeso constructed that the water may pass freely therethrough with littleor no possibility of the passageways in the protector becoming cloggedin view of the especial construction of these passages.

Other objects of the invention will be apparent from the followingdescription of the present preferred form of the invention taken inconnection with the accompanying drawings wherein Fig. 1 is a verticalsectional view of a protector constructed in accordance with thisinvention illustrating its application;

F ig. 2 is an elevational view partly in section of the cylinderprotector per se; and Fig. 3 is a top plan view thereof.

In the drawings a pump cylinder 4 is shown which may be of the usual orany desired configuration. A piston 5 is slidably mounted in thecylinder and has the rod 6 thereof extending upwardly beyond the upperterminal of the cylinder. A pipe 7 is superimposed on the upper end ofthe cylinder the diameter of the bore of which is in excess of thediameter of the bore of the cylinder. The cylinder 4 and pipe 5 aredetachably connected together by a screwthreaded collar 8. The upper endof the piston rod' 6 is equipped with a screwthreaded shank 9 which isengaged by a corresponding socket 10 formed on the lower end of aplunger rod 11, the latter being con 1 mately midway the upper and lowermargins of the protector body and gradually become deeper until theyultimately merge into the openings 15 thereby reducing frictionalresistance, of the water being elevated, to a minimum. The protector isheld from disk placement on the rod 6 by the plunger rod 11, the socketend of the latter being threaded on the shank 9, above the flat end 13of the protector 12'. It will be noted that the upper end of theprotector radiates into close proximity to the inner periphery of thepipe 7 to eliminate possibility ofobjects passing between the outerperiphery of the protector and the inner periphery of the pipe.

The location of the protector is of importance in the present inventionsince it has been found by practical experience that cylinderprotectors, which operate within the cylinder, score or otherwisemutilate the walls of the latter in time, with the result that theefficiency of the pump is prematurely mitigated. It has also been foundthat by locating the protector above the cylinder, as in the presentinstance,'that not only will the cylinder be saved from mutilation bythe protector or by ob ects which fall into the latter, but moreover,the water is elevated in a more effective manner and the protector ismore readily accessible for cleaning the same. Where the protector ismounted within the cylinder, especially in deep wells, it has a tendencyat times to jar the bolts loose. The construction and arrangement of thewater passageways in the protector is also of importance in the presentinvention.

Various changes may be made 1n this device, especially in the details ofconstruction, spherical configuration and provided with proportion andarrangement of parts Within an annular series of openings adjacent itsthe scope of the claim hereto appended. upper margin each of Whichcommunicates 10 What is claimed i With a Water passageway in the outerface 5 A pump cylinder protector including a of the body, substantiallyas described.

protector body engageable With the pump piston rod said protector beingof semi- LUM M. HEFLIN.

